Loss of the Enhanced GPWC Data on the Weather Radar Transceiver 1

TASK 34-41-00-810-848-A
Loss of the Enhanced GPWC Data on the Weather Radar Transceiver 1

1. Possible Causes

XCVR-WEATHER RADAR, 1 [1SQ1]
GPWC [1WZ]
wiring between the weather radar transceiver 1 and the GPWC

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 344100
AMM 34-41-00-740-002	BITE Test of the Weather Radar
AMM 34-41-33-000-004	Removal of the Weather Radar Transceiver
AMM 34-41-33-400-003	Installation of the Weather Radar Transceiver
AMM 34-48-34-000-001	Removal of the GPWC
AMM 34-48-34-400-001	Installation of the GPWC

3. Fault Confirmation
Subtask 34-41-00-740-134-A

A. Test
Do the BITE test of the weather radar system 1 AMM 34-41-00-740-002.

4. Fault Isolation
Subtask 34-41-00-810-111-A

A. If the test gives the maintenance message:
GPWC(1WZ)/ WXR1(1SQ1)
(1) Replace the XCVR-WEATHER RADAR, 1 [1SQ1] AMM 34-41-33-000-004 and AMM 34-41-33-400-003.
(2) If the fault continues:

replace the GPWC [1WZ] AMM 34-48-34-000-001 and AMM 34-48-34-400-001.

(3) If the fault continues:

do a check and repair the wiring between the weather radar transceiver 1 and the GPWC : pins AB/9G, 9H and pins AA/2A, 2B ASM 344100.

5. Close-up
Subtask 34-41-00-740-135-A

A. Do the test given in para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:06 UTC